Kinetis MicrocontrollersのトピックRe: KDS on TRK-KEA64 ADC

KDS on TRK-KEA64 ADC

dli1 — Thu, 04 Jun 2015 17:27:28 GMT

I am trying to read four channels of ADC using KDS on TRK-KEA64 and I read all zeros including the light sensor channel. I have used the same KDS project on TRK-KEA128 to do the same thing and it worked fine. Then I switched to TRK-KEA64 and selected the processor SKEAZN64MLH2, All four channels read zeros. Do I have to configure clock and ADC differently from TRK-KEA128 in addition to choosing different processors?

Re: KDS on TRK-KEA64 ADC

Alice_Yang — Fri, 05 Jun 2015 03:01:53 GMT

Hello david,

There are some difference , for example , KEA128 have the register " Status and Control Register 5 (ADC_SC5 ) ",

while KEA64 have not .

Alice

Re: KDS on TRK-KEA64 ADC

Hui_Ma — Fri, 05 Jun 2015 05:42:57 GMT

Hi David,

The KEA64 is using the same ADC module with KEA128, there should without any different with software code.

Please check TRK-KEA64 ADC example code for CodeWarrior software, you could refer related code and check if there with any difference with yours.

TRK-KEA64 CodeWarrior LAB3 - Analog to Digital Converter (ADC) module download here.

Have a great day,
Ma Hui

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Re: KDS on TRK-KEA64 ADC

dli1 — Fri, 05 Jun 2015 15:15:52 GMT

Hi Alice,

In the code ADC0.c file if I change the ADC_SC2 = ADC_SC2_REFSEL(0x00) to ADC_SC2 = ADC_SC2_REFSEL(0x01) I can get some ADC readings. However if you generate code, you erase this change. So the question is in the KDS how do I configure the ADC reference voltages? I configured as below but in the code the line ADC_SC2 = ADC_SC2_REFSEL(0x00) set to default.

Re: KDS on TRK-KEA64 ADC

Alice_Yang — Mon, 15 Jun 2015 08:38:28 GMT

Hello david,

I have test on my side ,it is the same wiht you , ,maybe there are some problem here.

And you can do like this : change the ADC_SC2 = ADC_SC2_REFSEL(0x00) to ADC_SC2 = ADC_SC2_REFSEL(0x01) ;

then right click the ADC component , select "Don't write genereated component modules" .

Have a great day,

Alice